A Single-Inductor Triple-Source Quad-Mode Energy-Harvesting Interface with Automatic Source Selection and Reversely Polarized Energy Recycling

Po Hung Chen*, Hao Chung Cheng, Chih Lun Lo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

This paper presents a single-inductor triple-source quad-mode (SITSQM) energy-harvesting interface in a 0.18-μm CMOS process. The proposed reversely polarized energy recycling (RPER) technique improves not only the conversion efficiency at low input voltage but also the system's output power range. The interface employs the buck-boost topology to convert energy from photovoltaic (PV) cells and a thermoelectric generator (TEG) to a regulated 1.2-V output. The proposed converter features four different operating modes, namely, harvesting, recycling, storing, and backup. The operating mode is automatically selected according to the input and load conditions using the automatic source selection mechanism. The experimental results demonstrate 25.3% efficiency improvement and 10 × output power range extension from the proposed RPER technique. The proposed SITSQM converter automatically manages three harvesting sources with 82.1% peak conversion efficiency.

Original languageEnglish
Article number8734727
Pages (from-to)2671-2679
Number of pages9
JournalIEEE Journal of Solid-State Circuits
Volume54
Issue number10
DOIs
StatePublished - Oct 2019

Keywords

  • Automatic source selection
  • buck-boost converter
  • DC-DC converter
  • energy harvesting
  • reversely polarized energy recycling (RPER)

Fingerprint Dive into the research topics of 'A Single-Inductor Triple-Source Quad-Mode Energy-Harvesting Interface with Automatic Source Selection and Reversely Polarized Energy Recycling'. Together they form a unique fingerprint.

Cite this